I wanted to do an upgrade on Friday, 26 November 2021

I wanted to do an upgrade on Friday, 26 November 2021. I spoke to a gentleman by the name Abdullah Haffejee who informed me that my upgrade could not be finalised because MTN did not have devices in stock. He promised to send me an email after our call regarding the upgrade and also that he will give me an update today, 30 November 2021. It's almost close of business and I have not received his email since our conversation and there is also no update regarding my upgrade I am not happy with this service and I am even considering cancelling my current month-on-month which started today and port to another network